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Free Science & Tech MCQs for LDC

Practice 20 free Science & Tech multiple choice questions for LDC exam. Instant answers with explanations in Hindi and English.

Strengthen your Science & Tech knowledge with focused MCQ practice. Every question is sourced from real Rajasthan exam patterns. Switch between Hindi and English, review explanations, and track your progress.

LDC — Science & Tech

20 Questions • Instant results & explanations • Hindi & English

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Question 1 of 20

When was 'IN-SPACE' (Indian National Space Promotion and Authorization Centre) established?

Question 2 of 20

Which of the following is NOT a sub-branch of Natural Science?

Question 3 of 20

Which of the following is NOT a member country of the 'Artemis Program' as per the list provided in the notes?

Question 4 of 20

Assertion (A): It is essential to memorize the specific provisions of the Rajasthan AI/ML Policy 2026 separately from national directives. Reason (R): Questions on state administrative policies often mix Central schemes with State schemes to trap candidates. Select the correct answer:

Question 5 of 20

Which of the following elements is classified as a ferromagnetic material, making it suitable for strong attraction and permanent magnetization?

Question 6 of 20

Which ISRO center is primarily responsible for the development of satellites and spacecraft?

Question 7 of 20

The technical architecture of the Pokhran-I nuclear test relied on which of the following specific device mechanisms?

Question 8 of 20

Which specific category of chemical reaction relies exclusively on the sustained absorption of radiant light energy to proceed?

Question 9 of 20

Which of the following statements regarding India's cryogenic engine development is correct?

Question 10 of 20

Which of the following is NOT an abiotic component mentioned in the context of an organism's habitat?

Question 11 of 20

Match the following Healthcare Registries/Schemes (List-I) with their specific administrative functions (List-II): List-I I. ABHA II. HFR III. Mukhyamantri Ayushman Arogya Yojana IV. Urban Ayushman Arogya Mandir List-II a. Telemedicine and remote consultations b. Financial cover up to ₹25 lakh per family c. Interoperable longitudinal electronic health record d. Database for geographic mapping of hospital beds Select the correct option from the codes given below:

Question 12 of 20

Assertion (A): When transitioning from left to right across a specific period, the metallic nature of the elements systematically decreases. Reason (R): The increasing effective nuclear charge strongly pulls the valence electrons inwards, making the atoms progressively less willing to lose electrons.

Question 13 of 20

Under which specific state policy is the Startup Q-Rate Matrix utilized to disburse seed and scale-up grants to emerging enterprises?

Question 14 of 20

What is the primary role of the State Remote Sensing Application Centre (SRSAC) located in Jodhpur and Jaipur?

Question 15 of 20

Match List-I (Isotopes) with List-II (Uses) and select the correct answer using the codes given below: List-I A. Uranium-235 B. Cobalt-60 C. Iodine-131 D. Carbon-14 List-II 1. Treatment of Goiter 2. Fuel in Nuclear Reactors 3. Determination of age of fossils 4. Treatment of Cancer

Question 16 of 20

Which mechanism ensures the synchronization of solar-generated electricity with the national power grid?

Question 17 of 20

Consider the operational sequence of the Bhadla Solar Park's development: 1. Execution by public-private joint ventures like RSPDCL and Saurya Urja Company. 2. Minimization of land acquisition costs in the uninhabitable desert of Bap tehsil. 3. Final attainment of 2,245 MW capacity across four distinct phases. Which of the above elements contributed to its status as the world's largest fully commissioned solar park?

Question 18 of 20

Which satellite series is primarily associated with 'Earth Observation' using Radar Imaging?

Question 19 of 20

According to the history of computing, which device is mentioned as the 'First Calculating Device'?

Question 20 of 20

Consider the following applications of modern applied science: 1. Algorithmic distribution of welfare funds. 2. Manual digging of Baori stepwells. 3. Genetic modification of arid-zone crops. 4. Deploying heat-resistant photovoltaic cells. Which of the above are considered direct manifestations of modern state modernization driven by applied science?

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